Use this parts list as a guide. I know you probably won't be able to use these same vendors. Sorry, I'm not familiar with your country and the vendors available in your area.
This will give you plenty of performance for your needs. If you need to lower the price, try dropping the GPU down a notch to the HD 7950.
Wow thanks alot this is a great system. I unfortunately cannot order anywhere else but from amazon they only ship world wide but this is a great base and it a better pc than I would have gotten. I am going to work off this thank you I appreciate it